AP® Physics 1 & 2

Finding the Speed of a Relativistic Banana Peel

APPH12-F77WSJ

A stationary hitchhiker watches a car fly by at a speed of $0.3c$, where $c$ is the speed of light. Someone in the car leans out the window and throws a banana peel forward, in the same direction the car is moving, at a speed of $0.2c$ relative to the car.